old rings

Cast rIngs are as cheap as dirt.
Moly rings can be inexpensive to buy. But they can get very expensive.

You could use old rings on old pistons. But once you hone the cylinder, it would be a crazy move considering the price of rings. Absolutely nuts!

Yea, you win the bet, kind of. But you would have to be mental to do it that way. You would have problems with the engine. It would run. Andale
No power. A laughing stock you would be.